Condensed Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Net Income (Loss) Available to Common Stockholders, Basic	$ (8,497)	$ (2,704)
Adjustments to reconcile net (loss) to net cash provided by operating activities:
Depreciation	10,230	11,372
Amortization	71	72
Gain (Loss) on Disposition of Property Plant Equipment	0	498
Other assets	291	405
Increase (Decrease) in Put Options	637	(300)
(Increase) decrease in current assets:
Accounts receivable	3,356	623
Inventories	(3,641)	(312)
Prepaid expenses and other	10	100
Increase (Decrease) in Derivative Assets	968	(1,023)
Increase (decrease) in current liabilities:
Decrease in other long-term liabilities	(1,517)	397
Accounts payable	952	(351)
Derivative financial instruments, related party	(970)	656
Accrued expenses	3,108	438
Net cash provided by operating activities	4,998	9,871
Cash Flows From Investing Activities
Purchase of property and equipment	(9,811)	(5,562)
Proceeds from Sale of Property, Plant, and Equipment	0	50
Net cash (used in) investing activities	(9,811)	(5,512)
Cash Flows From Financing Activities
Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Paid	0	6,663
Proceeds from notes payable	193,041	153,386
Payments on borrowings	(188,593)	(151,129)
Net cash (used in) financing activities	4,448	(4,406)
Net increase (decrease) in cash and cash equivalents	(365)	(47)
Cash And Equivalents-Beginning	1,440	1,487
Cash And Equivalents-Ending	1,075	1,440
Supplemental Cash Flow Information [Abstract]
Interest Paid, Excluding Capitalized Interest, Operating Activities	$ 980	$ 952